Lecture 6

Question 1

Perichondrium?

Answer 1

-Dense Irregular CT
-Made up of chondroblasts
-Function= growth + maintenance of cartilage
-Locations= surrounding hyaline + elastic cartilage

Question 2

Function of Perichondrium?

Answer 2

Growth + Maintenance of Cartilage

Question 3

Appositional Growth?

Answer 3

Growth is to the surface of the cartilage

Question 4

Interstitial Growth?

Answer 4

Growth is from the inside of the cartilage

Question 5

Isogenous Groups?

Answer 5

Cluster of Chondrocytes

Question 6

Chondroblasts/cytes produce?

Answer 6

Collagen Fibers

Question 7

Hyaline Cartilage?

Answer 7

Type of specialized CT –> Most Abundant

Question 8

Locations of Hyaline Cartilage?

Answer 8

-Embryo (early skeleton)
-Articular Surfaces of Joints
-Epiphyseal Plates (Growing Bones)
-Respiratory System (trachea, bronchi, larynx)

Question 9

Cellular Composition of Hyaline Cartilage?

Answer 9

Chondrocytes (houses in lacunae and surrounded by ECM)

Question 10

Chondrocytes produce?

Answer 10

Fibers

Question 11

GAGs?

Answer 11

Hyaluronic acid, keratin/chondroitin sulfate

Question 12

GAGs + PGs + glycoproteins + fibers?

Answer 12

ECM

Question 13

Hyaline Cartilage is typically surrounded by?

Answer 13

Perichondrium (dense irregular CT)

Question 14

Elastic Cartilage?

Answer 14

A type of specialized CT

Question 15

Locations of Elastic Cartilage?

Answer 15

-Auricle (external ear)
-Auditory Tubes (internal ear)
-Epiglottis (larynx)

Question 16

Cellular Composition of Elastic Cartilage?

Answer 16

Chondrocytes (housed in lacunae and surrounded by ECM)

Question 17

Which one has more Chondrocytes? Elastic or Hyaline?

Answer 17

Elastic Cartilage

Question 18

Fibrocartilage?

Answer 18

A type of specialized CT

Question 19

Locations of Fibrocartilage?

Answer 19

-Intervertebral Discs (spine)
-Symphysis Pubis (pelvis)
-Menisci (knee)
-Joints (sternoclavicular and temporal mandibular)

Question 20

Cellular Composition of Fibrocartilage?

Answer 20

Chondrocytes (houses in lacunae and surrounded by ECM)

Question 21

Does NOT contain Perichondrium?

Answer 21

Fibrocartilage

Question 22

Can withstand compression and shear forces?

Answer 22

Fibrocartilage

Question 23

Hyaline Chondrocytes produce?

Answer 23

Type II collagen fibers

Question 24

Elastic Chondrocytes produce?

Answer 24

Elastic Fibers + Type II collagen fibers

Question 25

Fibrocartilage Chondrocytes produce?

Answer 25

Type I collagen fibers

Question 26

Perichondrium present in?

Answer 26

Hyaline + Elastic Cartilage ONLY

Question 27

Hyaline Cartilage is required in?

Answer 27

Formation of Bone (produces precursor skeleton in endochondral bone formation)